<?php


namespace App\Http\Controllers\API;

use App\Exceptions\HTTPException;
use App\Exceptions\NoPermissionException;
use App\Exceptions\NotLoggedInException;
use App\Exceptions\ResourceNotFound;
use App\Http\Resources\oAuth\AccessToken;
use App\Jobs\Mails\ValidateMailAddressJob;
use App\Models\App;
use App\Models\AppAccess;
use App\Models\Invite;
use App\Models\Mail;
use App\Models\Setting;
use App\Models\User;
use Domnikl\Statsd\Client;
use Illuminate\Support\Facades\Auth;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Laravel\Lumen\Routing\Controller as BaseController;
use ReCaptcha\ReCaptcha;
use TaGeSo\APIResponse\Response;

class UserController extends BaseController
{
    /*
     * The Password login is just for the WebGUI
     */
    public function passwordLogin(Request $request, Response $response, Client $statsd)
    {
        $statsd->count("login.try", 1);
        //If Recptache is enabled check it at the beginning
        if(Setting::getSettingValue("recaptcha_v2_login")) {
            $reCaptcha = new ReCaptcha(Setting::getSettingValue("recaptcha_v2_secret"));
            $reresponse = $reCaptcha->verify($request->input("g-recaptcha-response"));

            if(!$reresponse->isSuccess()) {
                $statsd->count("login.wrongcaptcha", 1);
                throw new HTTPException(400, "Captcha validation failed");
            }
        }


        //Validate Input
        $this->validate($request, [
            'username' => 'required',
            'password' => 'required'
        ]);

        //Get User
        $user = User::query()->where("username", "=", $request->input("username"))->first();

        //Check if a user is found
        if($user == null) {
            $statsd->count("login.wronguser", 1);
            throw new HTTPException("400", "Username or Password wrong");
        }

        if(!password_verify($request->input("password"), $user->password)) {
            $statsd->count("login.wrongpassword", 1);
            throw new HTTPException("400", "Username or Password wrong");
        }

        $app = App::query()->where("name", "=", "PHP-GUI")->firstOrFail()->id;

        //Create Access Permission for WebGUI
        $access = AppAccess::getOrCreate($user->id, $app);
        $token = \App\Models\AccessToken::createToken($access);

        //Save Token to Session
        if(getenv("SAVE_TOKEN_TO_SESSION")) {
            $_SESSION["token"] = $token->token;
        }

        $statsd->count("login.success", 1);

        return $response->withData(new AccessToken($token));
    }

    public function checkPassword(Request $request, Response $response, Client $statsd) {
        //Validate Input
        $this->validate($request, [
            'username' => 'required',
            'password' => 'required'
        ]);

        //Get User
        $user = User::query()->where("username", "=", $request->input("username"))->first();

        //Check if a user is found
        if($user == null) {
            $statsd->count("pwcheck.user_wrong", 1);
            throw new HTTPException("400", "Username or Password wrong");
        }

        if(!password_verify($request->input("password"), $user->password)) {
            $statsd->count("pwcheck.password_wrong", 1);
            throw new HTTPException("400", "Username or Password wrong");
        }

        $statsd->count("pwcheck.ok", 1);
        $response->setMessage("Account ok");

        return $response;
    }

    public function me(Response $response) {
        if(!Auth::check()) {
            throw new NotLoggedInException();
        }

        return $response->withData(new \App\Http\Resources\API\User(Auth::user()));
    }

    public function register(Request $request, Response $response) {
        //If Recptache is enabled check it at the beginning
        if(Setting::getSettingValue("recaptcha_v2_register")) {
            $reCaptcha = new ReCaptcha(Setting::getSettingValue("recaptcha_v2_secret"));
            $captchaResponse = $reCaptcha->verify($request->input("g-recaptcha-response"));

            if(!$captchaResponse->isSuccess()) {
                throw new HTTPException(400, "Captcha validation failed");
            }
        }

        $invite = Invite::query()->where("code", "=", $request->input("invite"))->first();
        if($invite != null) {
            if($invite->status != "active") {
                throw new HTTPException(400, "Invite code invalide");
            }
            if(!empty($invite->username) && $request->input("username") != $invite->username) {
                throw new HTTPException(400, "Invalide username for invite");
            }

        } else {
            $setting = Setting::query()->where("name", "=", "registration_possible")->firstOrFail();
            if(!$setting->value) {
                throw  new HTTPException("400", "Registration disabled");
            }
        }

        $this->validate($request, [
            'username' => 'required|max:255|min:5|regex:@^[a-z0-9]*$@|unique:users',
            'password' => 'required|min:8',
            'mail' => 'required|email|unique:mails'
        ]);

        DB::beginTransaction();

        $user = new User();
        $user->username = $request->input("username");
        $user->password = password_hash($request->input("password"), PASSWORD_BCRYPT);

        if($invite != null) {
            $user->inviteCode = $invite->code;
        }

        //Make first user an admin
        $count = User::query()->count("*");
        if($count == 1) {
            $user->admin = 1;
            $user->developer = 1;
        }

        $user->saveOrFail();

        $mail = new Mail();
        $mail->createValidationToken();
        $mail->mail = $request->input("mail");
        $mail->primary = false;
        $mail->status = "waiting";
        $mail->user_id = $user->id;

        $mail->saveOrFail();

        $this->dispatch(new ValidateMailAddressJob($mail));

        if($invite != null) {
            $invite->status = "used";
            $invite->saveOrFail();
        }

        DB::commit();

        return $response->withData(new \App\Http\Resources\API\User($user));
    }

    /*
     * Return Captcha Settings used by the public webpage bevore the user is loggedin
     */
    public function reCAPTCHA(Response $response) {
        $data = [];
        $data["key"] = Setting::getSettingValue("recaptcha_v2_key");
        $data["login"] = (bool)Setting::getSettingValue("recaptcha_v2_login");
        $data["register"] = (bool)Setting::getSettingValue("recaptcha_v2_register");
        return $response->withData($data);
    }

    public function getInviteCodeInfo(Request $request, Response $response) {
        $data = [];
        $invite = Invite::query()->where("code", "=", $request->input("code"))->first();

        if($invite == null) {
            throw new ResourceNotFound();
        }

        $usable = false;
        if($invite->status == "active") {
            $usable = true;
        }
        $data["usable"] = $usable;
        #$data["status"] = $invite->status;
        $data["username"] = $invite->username;

        return $response->withData($data);
    }

    public function listMails(Response $response) {
        if(!Auth::check()) {
            throw new NotLoggedInException();
        }

        $mails = Mail::query()->where("user_id", "=", Auth::id())->get();

        return $response->withData(\App\Http\Resources\API\Mail::collection(collect($mails)));
    }
    public function addMail(Request $request, Response $response) {
        if(!Auth::check()) {
            throw new NotLoggedInException();
        }

        $this->validate($request, [
            'mail' => 'required|email|unique:mails'
        ]);

        $mail = new Mail();
        $mail->createValidationToken();
        $mail->mail = $request->input("mail");
        $mail->primary = false;
        $mail->status = "waiting";
        $mail->user_id = Auth::user()->id;

        $mail->saveOrFail();

        $this->dispatch(new ValidateMailAddressJob($mail));
        return $response;
    }
    public function removeMail(Request $request, Response $response, $id) {
        if(!Auth::check()) {
            abort(401);
        }

        $mail = Mail::query()->where("id", "=", $id)->firstOrFail();

        if($mail->user_id != Auth::user()->id) {
            abort(401);
        }

        if($mail->primary) {
            throw new HTTPException(400, "You can't delete your primary mail");
        }

        $mail->delete();

        $response->setMessage("Mail address deleted");
        return $response;
    }

    public function changePrimaryMail(Request $request, Response $response, $id) {
        if(!Auth::check()) {
            abort(401);
        }

        $mail = Mail::query()->where("id", "=", $id)->firstOrFail();
        if($mail->user_id != Auth::user()->id) {
            abort(401);
        }

        if($mail->status != "valide") {
            throw new HTTPException("Mail not validated, click the link in the mail first");
        }

        $mails = Mail::query()->where("user_id", "=", Auth::user()->id)->get();
        foreach($mails as $m) {
            $m->primary = false;
            $m->saveOrFail();
        }

        $mail->primary = true;
        $mail->saveOrFail();

        $response->setMessage("Primary mail changed");

        return $response;
    }
    public function changePassword(Request $request, Response $response) {
        if(!Auth::check()) {
            abort(401);
        }

        $this->validate($request, [
            'password' => 'required|min:8'
        ]);

        $user = Auth::user();
        $user->password = password_hash($request->input("password"), PASSWORD_BCRYPT);
        $user->saveOrFail();

        $response->setMessage("Password changed");

        return $response;
    }
}